Rear dump semitrailer upper frame and rear dump semitrailer

Abstract

The rear dump semitrailer upper frame comprises a pair of frame longitudinal beams and a pair of brim longitudinal beams, the brim longitudinal beams are connected to the tops of the frame longitudinal beams, a transverse support is connected between the pair of brim longitudinal beams, and wing supports are arranged on the outer sides of the brim longitudinal beams respectively. The brim longitudinal beam comprises an upper top plate connected with the frame longitudinal beam, an outer side vertical plate and an inner side vertical plate are arranged on the two sides of the upper top plate, folded edges are arranged at the bottom of the outer side vertical plate and the bottom of the inner side vertical plate respectively, and the height value of the outer side vertical plate is larger than that of the inner side vertical plate. According to the rear dump semitrailer upper frame, the section inertia moment and the strength are improved, and the number of parts and the dead weight of the whole structure are reduced.

Description

Technical Field

[0001] The utility model relates to the field of rear-dumping semi-trailers, specifically to a front frame and a rear-dumping semi-trailer of a rear-dumping semi-trailer. Background Art

[0002] At present, most of the front parts of the front frames of rear-dumping semi-trailers in the market adopt a structure of four longitudinal beams, and the rear part adopts a structure of two longitudinal beams. However, the two middle longitudinal beams among the four front longitudinal beams need to be embedded inside the vehicle frame, so that the height of the cross brace in the middle of the front longitudinal beams of the vehicle frame is reduced, thus affecting the torsional strength of the front section of the vehicle frame. Moreover, the front frame with four longitudinal beams has relatively numerous components and is relatively troublesome to manufacture. Therefore, the existing front frame structure is not the optimal structure and still needs to be further optimized and improved to achieve the purpose of ensuring that the front frame does not interfere with the vehicle frame components, indirectly enhancing the vehicle frame strength, meeting the simplicity of the manufacturing process, and simultaneously taking into account the lightweight design of the product structure.

[0003] The utility model patent with the authorization announcement number CN218489539U discloses a front frame of a rear-dumping semi-trailer, which includes a group of side beams on both sides and a capping beam in the center. A plurality of wing braces are connected between the inner sides of the side beams and both sides of the capping beam. The capping beam includes an inverted U-shaped substrate for accommodating the semi-trailer girder and flanges arranged on both sides of the inverted U-shaped substrate, and the flanges are in contact with the inner ends of the plurality of wing braces. Compared with the existing structure, this front frame of the rear-dumping semi-trailer reduces two inner longitudinal beams, thus ensuring the torsional strength and structural strength of the front section of the vehicle frame while reducing the self-weight. However, the sectional moment of inertia and strength of this front frame of the rear-dumping semi-trailer still need to be improved. Content of the Utility Model

[0004] In order to increase the sectional moment of inertia and strength of the front frame of the semi-trailer, reduce the number of parts and the self-weight of the overall structure, the technical solution adopted by the utility model is: a front frame and a rear-dumping semi-trailer of a rear-dumping semi-trailer, which include a pair of vehicle frame longitudinal beams and a pair of capping longitudinal beams. The capping longitudinal beams are connected to the tops of the vehicle frame longitudinal beams. A cross brace is connected between the pair of capping longitudinal beams, and wing braces are respectively arranged on the outer sides of the capping longitudinal beams;

[0005] The capping longitudinal beam includes an upper top plate connected to the vehicle frame longitudinal beam. Outer vertical plates and inner vertical plates are arranged on both sides of the upper top plate. Flanges are respectively arranged at the bottoms of the outer vertical plates and the inner vertical plates, and the height value of the outer vertical plate is greater than the height value of the inner vertical plate.

[0006] Based on the above, in order to increase the structural strength, a longitudinal beam reinforcement plate is vertically arranged at the lower part of the outer vertical plate.

[0007] Based on the above, in order to increase the structural stability, the symmetry axes of the pair of capping longitudinal beams coincide with the symmetry axes of the pair of vehicle frame longitudinal beams.

[0008] Based on the above, the cross brace is connected between a pair of the inner vertical plates, and the bottom of the cross brace is connected to the hem on the inner vertical plate.

[0009] Based on the above, the bottom of the longitudinal beam reinforcement plate is connected to the hem of the outer vertical plate.

[0010] Based on the above, in order to increase the structural strength and stability of the upper frame of the rear dump semi-trailer, side beams are further provided on the outer sides of the wing braces, and tail cross beams are further provided at the tails of a pair of the eaves longitudinal beams. Two ends of each tail cross beam are respectively connected to a pair of the side beams.

[0011] The present utility model further provides a rear dump semi-trailer, which is equipped with the above-mentioned upper frame of the rear dump semi-trailer.

[0012] The present utility model has substantial features and progress compared with the prior art. Specifically, for the upper frame of the rear dump semi-trailer and the rear dump semi-trailer provided by the present utility model, the upper frame longitudinal beam adopts an eaves beam structure with a non-uniform cross-section height throughout the body. The height of the eaves longitudinal beam can adjust the height of one side of the cross-section according to the strength of the longitudinal beam. Among them, the side with the higher cross-section is on the outer side of the vehicle body, and the side with the lower cross-section is in the middle of the vehicle body. A cross brace is provided in the middle of the eaves longitudinal beam to connect the longitudinal beams. A wing brace is connected between the outer side of the eaves longitudinal beam and the side beam. A longitudinal beam reinforcement plate is added between the wing brace and the longitudinal beam to prevent the eaves longitudinal beam from deforming during the lifting force application process, adopting the eaves beam structure with a non-uniform cross-section height throughout the body. Compared with the traditional longitudinal beam structure, the moment of inertia and strength of the cross-section are increased by more than one time. At the same time, the number of parts and the self-weight of the overall structure are reduced, thereby realizing the unique functional elements of the upper frame structure and meeting the usage requirements of the vehicle. Description of the Drawings

[0013] Figure 1 is a schematic cross-sectional structure diagram of the upper frame in the upper frame of the rear dump semi-trailer and the rear dump semi-trailer provided by the present utility model.

[0014] Figure 2 is a schematic overall structure diagram of the upper frame in the upper frame of the rear dump semi-trailer and the rear dump semi-trailer provided by the present utility model.

[0015] Figure 3 is a schematic structure diagram of the eaves longitudinal beam in the upper frame of the rear dump semi-trailer and the rear dump semi-trailer provided by the present utility model.

[0016] In the figure: 1, side beam; 2, wing brace; 3, eaves longitudinal beam; 4, longitudinal beam reinforcement plate; 5, frame longitudinal beam; 6, cross brace; 7, tail cross beam; 8, first hem; 9, inner vertical plate; 10, second hem; 11, outer vertical plate; 12, upper top plate. Detailed Embodiments

[0017] The technical solution of the present utility model will be further described in detail below through specific embodiments.

[0018] Embodiment 1

[0019] This embodiment provides a rear-dumping semi-trailer upper frame, as Figure 1 , Figure 2 , Figure 3 shown, including a pair of frame longitudinal beams 5 and a pair of brim longitudinal beams 3. The brim longitudinal beams 3 are connected to the tops of the frame longitudinal beams 5. A cross brace 6 is connected between the pair of brim longitudinal beams 3, and wing braces 2 are respectively arranged outside the brim longitudinal beams 3.

[0020] Specifically, in this embodiment, the brim longitudinal beam 3 includes an upper top plate 12 connected to the frame longitudinal beam 5. Outer vertical plates 11 and inner vertical plates 9 are arranged on both sides of the upper top plate 12, and flanges are respectively arranged at the bottoms of the outer vertical plates 11 and the inner vertical plates 9. The height value of the outer vertical plate 11 is greater than the height value of the inner vertical plate 9. Specifically, according to the distribution positions, the flanges can be divided into a first flange 8 and a second flange 10.

[0021] In order to increase the structural strength, a longitudinal beam reinforcement plate 4 is also vertically arranged at the lower part of the outer vertical plate 11. In order to increase the structural strength and stability of the rear-dumping semi-trailer upper frame, a side beam 1 is also arranged outside the wing brace 2, and a tail cross beam 7 is arranged at the tails of the pair of brim longitudinal beams 3, and both ends of the tail cross beam 7 are respectively connected to the pair of side beams 1.

[0022] Embodiment 2

[0023] This embodiment provides a rear-dumping semi-trailer upper frame, which is different from Embodiment 1 in that, in this embodiment, in order to increase the structural stability, the symmetry axes of the pair of brim longitudinal beams coincide with the symmetry axes of the pair of frame longitudinal beams.

[0024] The cross brace is connected between the pair of inner vertical plates, and the bottom of the cross brace is connected to the flange on the inner vertical plate. The bottom of the longitudinal beam reinforcement plate is connected to the flange of the outer vertical plate.

[0025] Embodiment 3

[0026] This embodiment provides a rear-dumping semi-trailer installed with the rear-dumping semi-trailer upper frame described in Embodiment 1 or Embodiment 2.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that it is still possible to modify the specific implementation manners of the present utility model or perform equivalent replacements on some technical features; without departing from the spirit of the technical solutions of the present utility model, they should all be covered within the scope of the technical solutions claimed by the present utility model.

Claims

1. A rear unloading semi-trailer mounting, characterized in that: It comprises a pair of frame longitudinal beams and a pair of brim longitudinal beams, wherein the brim longitudinal beams are connected to the top of the frame longitudinal beams, a cross brace is connected between the pair of brim longitudinal beams, and wing braces are respectively arranged on the outer sides of the brim longitudinal beams; The brim longitudinal beam includes an upper top plate connected to the frame longitudinal beam, and outer vertical plates and inner vertical plates are arranged on both sides of the upper top plate. The bottoms of the outer vertical plates and the inner vertical plates are respectively provided with folded edges, and the height value of the outer vertical plates is greater than the height value of the inner vertical plates.

2. The rear unloading semi-trailer mounting according to claim 1, characterized in that: A longitudinal beam reinforcement plate is also vertically arranged at the lower part of the outer vertical plate.

3. The rear unloading semi-trailer mounting according to claim 2 is characterized in that: The symmetry axes of the pair of hat brim longitudinal beams coincide with the symmetry axes of the pair of frame longitudinal beams.

4. The rear unloading semi-trailer mounting according to claim 1, 2 or 3, characterized in that: The cross brace is connected between a pair of inner vertical plates, and the bottom of the cross brace is connected to the folded edge on the inner vertical plates.

5. The rear unloading semi-trailer mounting according to claim 2, characterized in that: The bottom of the longitudinal beam reinforcement plate is connected to the folded edge of the outer vertical plate.

6. The rear-dumping semi-trailer mounting according to claim 1, 2, 3 or 5, characterized in that: A side beam is also provided on the outer side of the wing support, and a tail cross beam is also provided at the tail of a pair of brim longitudinal beams, and both ends of the tail cross beam are respectively connected to the pair of side beams.

7. A rear dump semi-trailer, characterized in that: The rear-dumping semi-trailer is equipped with the rear-dumping semi-trailer upper frame described in any one of claims 1 to 6.

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